Truck-body-dumping mechanism.



G. A. WOOD. TRUCK BUDY DUMPING MEBHAMSM.

` APPLICTKN fili JAH. l5, 59?. 1 ,271 ,974. Patented July 9,1918.

G. A. WOOD.

TRUCK BUDY DUMPING MECH'ANISM.

APPucATmN FILED mn. I5, 19Hy 1,27 1 ,974. Patented July 9, 1918.

GARFIELD A. WOOD, 01" DETROIT, MICHIGAN.

TBUCK-BODY-DUMPING MECHANIBM.

Bpecmoetion o! Letten Patent.

Patented July 9, 1918.

Application Med January 15, 1917. erlal No. 142,404.

To all whom it may concern.'

Be. it known that I, GARFIELD A. Woon, a citizen of the United States and residing al Detroit, in the county oi lVayne and State of Michigan, have invented a new and Improved. Truck-Bod -Dumping Mechanism, of which the fol owing is a specification.

It is common ractice to ydump the contents of truck bof ies by liftin the front end upwardly about pivots near t e rear end of the chassis by means of hydraulic hoisting means. A convenient source from which to operate the hoisting means is the propeller shaft, but, on account of the fact that the heavy loads and shocks incident to hoisting are borne on the side frames nr independentl of the propeller shaft, the deflection of tie former is not transmitted to the lati ter. in, it is desirable to provide for sli htmaoeuracies in the construction of eit er hoist or chassis (often made by different manufacturers), whereby assembling 4of the parts is facilitated. It is further de sirable tofravoid the liabilityr to leakage which results from independently supporting the pumping'and hoisting elements of which the hoisting means as a whole is made up. 1t is also especially desirable to so mount. the ump and the connections whereby it is driven that they are least affected by dirt, that they occa y the least possible space and are least lia le to interfere with operating rods and the like in the various chassis to which the hoisting means must be applied, in other words, to make a iven embodiment of the invention ne neary as possible of general a lication. With these ends in view the` pre nt invention consists in a supplemental frime or support which extends across between the side bars of the chassis at about the u per level thereof, said supplemental frame cplending, on one side lonly of the propeller s aft and supportin a pump and mechanism, including an en f.

less member and clutch gear, whereby said pump is driven. The invention also consiets iny a supporting member de ending ulb-i om` side only of the propeller shaft, togather with a clutch ear bearing mounted solely upon said mem er and encircling the shaft and a clutch gear in said beaxjin said gear being spaced from the shaft, w ereby the pump may be driven regardless of deflection of the sup rting member and with out inducing stresses in the shaft.

The invention furthe-r consiste in improvements in the clutch operating mechanism whereby the device is rendered more compact and less expensive; also `in means whereby rattling of the clutch parte is prevented; also in means whereby the clutch partei are prevented from becoming accidentally disengaged while running. The invention further consists in the details of construction Shown, described and claimed.

Certain general combinations of elements and certain specific features relevant to the construction of the mechanism shown and claimed herein are claimed in my earlier copending applications for U. S. Letters Pat.- ent, namely S. N. 183,979, filed August 1, 1917 (renewal of S. N. 14,480, led March 15` 1915) and the division thereof S. N. 115,957, tiled August 21, 1916;

S. N. 14,479, filed March 15, 1915, and the division thereof S. N. 117,235, tiled August S. N. 117,236, tiled August 28, 1916, S. N. 135,797. filed December. 8, 1916 and S. N. 138,762, filed December 26, 1916. In the drawings, wherein a referred mbodiment of the inventin is s own, F' re 1 is fragmentary side elevation,V parte being broken away. Fig. 1 is a continuation of Fig. 1. Fig. 2 is a section looking rearwardly from a plane just back of the seat, Fig. 3 is an enlarged fragmentary plan view on theI line 3-3 ,of AF ig. 2, the pipes being removed. 4 i an elevation, parts beingbrolen away, looking from the bottom in Fig. 3. 5 and 6 are sections on the lines 5-5 and 6--6, respectively, of Fi 3 and 4. Fig. 7 isn fragmentary view rom the top in Fig. 8.

1 indicates the side bars of the vehicle near the rear end of which are secured brackets bearing horizontal pivots 2 about which the body 3 may be swungverticaliy for dumping. The front end of the body rests, when in lowered position, either directly on the side bars or on suitable chairs. This general construction is wellknown,

Extending transversely across the `side bars at a i just forwand 'of the front. end of the is a supplementary frame 4 -upon whichV .mets the flanged base 5 cfa hyorqac (oil) hoisting cylinder in which the assopiatalniston are renewable QfhemS-rmil which mynmwf/ niwt 10, wlw

lcv blocks 1l, cables 12 (one end of each of which is preferably anchored to the supplementary frame), and the body arms 13 to which the other endsl of the cables are attached, the piston muy be utilized to tilt the body. It, will, however, be understood that the construction thus far described may be widely varied. The usual longitudinally extending` propeller shaft appears at 15, the suction pipe (which communicates with the "1 upper end of the cylinder) at 16 and the deivery pipe (which communicates with the 'lwer end of the cylinder) at 18.'

(The `sup lementafl frame 4 includes a l r 20,5preferably an angle-iron, which de ds at one side of the pro ller shaft on and to a level somewhat be ow the latter--a portion of the lower end of the transverse flange of this member `may be she-.tred away (Figs. 2 and 4) to receive the gear pump casing 21 that may be rigidly secured to the other (or longitudinally extending) flange by screw bolts which are threaded in bosses 23 on the easing, The longitudinal flange, of the member Q0 is also perforated to receive screw bolts 24 (Fig. 25) whereby a bearimgr 25 (including the cap 2li and retaining.r screwszi') for the sprocket gear 2H is supported. The sproeket gear has flanges 2S) und 3() by which it is prevented from slipping longitudinally through the bearing, and it will be noted surrounds and is spaced considerably from the propeller shaft. To the lutter is secured a split clutch member support, 32 (the sect-ions of which are united by the clamping bolts 2&3) and in this support a 'clutch member 34, which 4includes studs 55 journal d in ears 36 on the member 52, is mounted. The member :S4 also includes spaced contactelemcnts 38 at substantially right. angles to the axis of the studs 35, and tl'iese elements are notched as indicated at. 39 to receive the curved heads 4U of the oppositely disposed clutch pins 41 which are slidable in the sprocket wheel 2R'. At their rear ends the clutch pins are slightly reduced and pass through the spool-shalied member 44,that is also spaced from thel propeller shaft and has the central peripheral groove 45 in which is received contacts o r shoes 4,6. Nuts 4S hold the pins 41 rigid with the member 44. 'The shoes 413 are pivotally mounted in the ends 4H oi' a divided clutch shitting member which includes a shank 4!) harinar a rounded end received in a socket in thc face of the gear casing. It will be observed that the end 50 has considerable play in the socket, which relieves the shoes "i6 from wear as the shaft 15 shifts buck and forth Slightly. The, clutch shi'fting" member is notched or grolv'ved at 51 hear the base of the yoketo receive the slotted bell crank 52 (pivoted upon one of the screw bolts that may be actuated by the link 53 and.

hand lever 54 mounted on the expansion chamber or other convenient location within reach of the seat 55 (Figs. 1 and 2.) It will be seen that the mounting of the end 50 of the yoke in the socket in the manner shown in Figs. 3 and 4 allows the shiftable clutch elen'ient a slight freedom of mmement longitudinally (ff the. shaft. A proper' engagement of the treads ttl with the .se-.us

y3l) may thus alwaysvbe setured regardless of such longitudinally displacement as ordinarily takes place in the shaft 15 on account of wearn inertia, teniperature or inaccuracy of construction. i

A chain 56 (I"ig. connects the sprocket gear Qlto the 4sprocket, gear .37 .t Fig. 3) on -the shaft 58 of the driving gear of the pump.

members ft2 and ret-.lined iny position b v 4r peeuing the metal down into the slot. The manner oi' ser'i|rin; f the springs in position is, of course, merel)l illustrative.

Operation: 'lhe hand lever 5l is normally1 retained in a notch in the lug` (i5 bul in car-c it should be jarred loose it will be noticed that tbe weighl oi' tlielink 5I) is applied to the crank .72 in such manner as to hold the clulch pins 11 withdrawn out ol' the path ol' the member 2H: consequently there is no tendencyr for the plus to move, to pump diiving position as the vehicle travels alon; y the roadway. Again` when the clutch pins are purposel)v thrust to pump driving position the ribs lll seat themselves in the corresponding grooves 3S) (the propeller sha'l't may be running either clockwise or counter clockwise, dern-ruling upon the particular engine or transmission used) and are thereby prevented from jarring loose. although the -slight movement of the shaft forward and back which ordinarily takes pla e isv allowed. This construction allowsthe supL plemental frame to sink relatively to the propeller shaft (as is caused by the liftingr of heavy loads) without impairiug the driv ing connection and without inducing heirling stresses in the shaft. Lack of ali|u ment of the shaft 15 and gear 28 in one direction is compensated for by a pivotal movement ofthe member 34 about the `lxis of the studs 35; lack of alinementin a direction at'right angles to the first .named direction .is compensated for by a relative movement of the ,ribs 40 and grooves 39.

ltltl llt) The yoke member 48-49 of-course swin s about a vertical axis through the Isent `when actuated by the crank 52.

l The entire Construction is very simple and compact and readily adapts itself to the vai rions makes of chassis; in case that side of the chassis in which the pump and asso ciated elemente are located in Fig. 2 is obstrnrted f by rods or the like, it is a-sim le matte? to reverse the necessa parte (t at is, to make the parts lefts, those shown being rights) and mount the um on the opposite side of the propellldr s ft. The details of the construction may be chan ed within wide limits without departing rom the spirit of the invention, and I do not, therefore, wishto be limited except as indicated in the siibjoined claims.

I claim:

1. In combination with the side bars and the longitudinally extending propeller shaft of a motor vehicle, a supplemental support extending across between the side-bars and depending on one side only of said shaft, a hoisting cylinder on the supplemental support, a pump for the hoisting cylinder and u pump driving gear supported on the de pending ortion of the supplemental support, saidp gear being hollow and of appre- ,cifibly greater internal diameter than the external diameter of the shaft, said shaft passing through the gear, whereby the supplemental frame may be deflected Without inducing bending stresses in the shaft, and

f means for driving said gear from the shaft at will. t

Q. In combination with the side bars and the longitudinally extending shaft of a motor vehicle, :i supplemental support extending :ii-ross between the side bars and de ending on one side only7 of said shaft, a ioisting cylinder on the supplemental support. a pump for the hoisting cylinder, a. `pump driving geansupported on the depending portion of the supplementalv support. said gear being hollow and of appreciably greater-internal diameter than the external diameter of the shaft, said shaft passing through the gear, whereby the suppleinental frame may be deflected without inducing bending stresses in the shaft, and means for driving said gear from the shaft at will.

y 3. In; Combination with the frame and a driven shaft of a motor vehicle, said frame and shaft constituting two members, a clutch element supported by one of said members and slidable longitudinally 'of the shaft, and a second clutch element su ported by the other member and tiltable a out an axis at substantially right angles-to the axis of the shaft, the engaging surfaces of said elements being shaped to prevent relative movement of said elements along the axis of the shaft. 4. In combination, a driven shaft, a clutch .of motor shaft und sli able longitudinally thereof, an

element carried by the first clutch member and tiltable about an axis substantially inter Booting the axis of the shaft and at substantielly right angles thereto, said element hav ing drivin engagement with the second clutch mem r when the latter is in one )osition, and resilient means tending to hold the tiltable element in a predetermined angular position in reference to its movement about its exis. y

5. In combination, a. driven shaft, a clutch member supported thereon a second clutch member spaced from and surrounding said shaft and supported independently thereof,

one of said members bein slidable along the shaft, an element carried 'y one of the members and tiltable about an axis substantially intersectin that of the shaft and substantially at right angles thereto, said element engaging the member other than that by whic it is carried when the slidable member is in `one ition and being out of the path thereof w en the slidable member is in im other position, the engagi surfaces of the element and the member ot er thantlitby which the element. is carried being sblped to prevent disengagement from one in' by a movement amllel to the axis of the shft.L

. In com ination with the side bars and the longitudinali extending propeller shaft of a motor vehic e, e supplementary support extending across between the side bers and depending on one side only of said shaft a puin casing located on the side of the epen ing portion moet remote from said shaft, a located on the side of said de riding portion narestsaid shaft a pump driiing gear mounted 41li said bearing, and me'nll for driving' said gear from said shaft at 7. In with the side bars and the longltndinall extending propeller shaft a supplementary support' extending acrobetween the side bars and depending on one side on] of said shaft, a p easing located on e side of the deng portion.' mosh-remote from said shaft, shearing located on the side of said depending rtlon nearest Vsaid shaft a hollow im gear mounted in said been ing, f rsurroundi said shaft and bein spacbeghererom, an means for driving said ear from saidsbat et will. 8. i1 combination withthe side bars and the longitudinally extendin propeller shaft of a motor vehicle, a supp emental support extending across between the side bars and depending on one slde only of the shaft, a ump, a pump drivin gear carried solely by the depending portion of the supplemental support, means .for driving said gear from the shaft at will, and means for con- ,along trollingr the last` mentioned means so arranged that the weight ot the parts tends to hold f-:aid meant, out ol' pump driving relie tion.

l. ln combination with the f-iide bars and the longitudinally extending propeller shaft of a motor vehirle. a slil'iplemental support extending across between the side bars and depeudingon one side only ol' tlul sbal'l. a p mp, a clutch member carried by the slial't,

a other rlutrb memberi-wrrit-d by thil dep 4ndini,r portion ol t lnsu; plrmental support and arranged to be dl ven from the first Diluted e'llltrh member` nu am for driving tbe p mp from the seeond named elutch nu-mber, ar 'l means including a member earried by sold depending portion ol the ysupport and swingable about a vertical axis for controlling the second named clutch member.

10. ln combination with the side bars and the longitudinally extending propeller shaft of u motor vehicle, u supplemental lsupport extending across between the side bars, a pump, a pump drivlngjgearV carried by said supplemental support, said gear encircling the shaft and being Y.sl'i'aced therefrom, a clutch member carried by the shaft, another clutch member carried by the gear, and mennel including a member tarried b v said supplemental support and swingable about a vertical axis for moving said second eluteh member into engagement with the irst named clutch member at will.

11. In a motor vehiele, a shaft, a eluteh element carried thereby, a second eluteh ele-Y ment surrounding the shaft and spaced therefrom and including means movable the shaft into and from engagement with the first mentioned clutch element, a, member cooperating with the second el'utch element to permit rotation thereof and to shift the movable means in either dirt-,ction at will, and supportii'ig means for said member eons'tructed and arranged' to permit universal svt'inging movement thereof.

12. In eombinafion a shaft, a clutch ring surrounding the shaft and spaced therefrom, meansy for sul'iporting the clutch ring to swing about an axis which is at veubstantially rightfangles to and substantially intersects the axisof the shaft, a tubular clutch element surrour'uling the shaft and spaced therefrom, pins mounted on said `elemei'it to slide toward and frointtlie clutch ring, said pins having enlarged ende and the clntth ring having de pressions therein at points cru'ieiderahly removedangularly from tbe axis about which it iwiugs in which the enlarge-d ends of the pinsl are received.

13. ln combinationwith Side hars'and a substantially horizontal driven Shaft of a vehicle. a body pivoled to tilt in respect to said .Lide bars. a Aeupplemt ntary supl'iort, extending ar:ro:-,-. between the side bars, a pump and a hydranli.; cylinder mounted on said Ieupport for tilting s'ad edy, means for driving said pump'from'nitid shaft, said means including a clutrh eleinent mounted on the supplenu-ntary support and slidable longitlnlinally ol' the sbal'j'..y and u secohd rlutnh element mounted on the shaft and tiltable about an axis atright angles to the axie of aaid shaft. the engaging surfaces of said elements being shaped to preventmovement oll the second rlutrh eltunent. longitudi nally of the sha f't when power is being transmitted to the pump.

14. ln combination with the side bars and a substantiallyhorizontal driven shaft of a vchiele, a body pirott-d to-tilt ih. respett to said side, bars, :t supplementary support extending across between the said bare.y a pump Vand a hydrauliccylinder mount ed ou .said support for tilting said body, means for driving said pump from said sliaft. lsaid means including a clutch element mounted on tlnwupplementary Support: and Llidahlilongit odin-.illy of the shaft, a eccond club-h element mounted on the shaft and tilt-able about an axis at right angles to the axis of :said shaft, the engag ing surfacee of said elements being shaped to prevent; morena-,nt ol` the second 'clutch element longitudinally of the shaft when power is being ransuiitted to the pump, and resilient means tending to prevent the second clutch element; from vibrating about the axis at right angles to the shaft.

15. ln eombination with the frame of a vehicle and a tiltable body and a driven shaft supported thereon, a pump supported by said franie, means for driving the pump from the shaft, said means including a clutch eleinent mounted on the frame and slidable longitudinally of the shaft, said clutch element encircling the shaft and being spaced tl'ierefi'om, and a second clutch element mounted on the shaft and tiltable about an axis at right angles thereto, the first mentioned clutch element being arranged tio engage the second clutch element/ in a plane at substantially right angles to the axis' about which the second clutch element is tiltable, the engaging surfaces of said clutch elements being shaped to prevent movement of the second clutch element 1ongitudinally of the shaft when power is bein transmitted to the pump. A i

16. In combination with the side bars and the longitudinally extending propeller shaft of a motor vehicle, a supplementary support extending across between the side barsLsad support depending between the side bars and including a thin plate at about the level of that` .propeller shaft, said plate being ar ranged in a loi'igitudinal plane of the vehicle. a pump supporttalby the plate. said plate bring interliosed between the shaft` and the pump. and mean for driving the pump from the shaft at will.

17. In combination with the frame and a substantially horizontal driven shaft of a. vehicle, a clutch element support carried by the frame, a clutch element supported by the frame and slidablc longitudinally of the shaft, and a second clutch element mounted on the shaft and tiltable about an axis at right angles to the axis of the shaft, the engaging surfaces of said elements being shaped to prevent relative movement of said elements along the axis of the shaft.

18. In combination with the frame and the longitudinally extending propeller shaft of a motor vehicle, a first clufeh member carried by the shaft, a second clutch member coporative with the first clutch member and slidable longitudinally of the shaft, said clutch members having inter-engaging surfaces shaped to prevent disengagement of said members by a relative movementl longi tudinally of the shaft only, means for sliding the second clutch member, said means being constructed and arranged to allow limited free sliding movement of the second r clutch member, whereby the shaft may Shift slightly times.

19. In combination with the side bars and a driven shaft of a motor vehicle, a supplementary support having a portion arranged substantially in a vert ical longitudinal plane of the vehicle, a clutch member fixed to the shaft, a second clutch element carried by the support` yoke means swingable about a vertical axis and constituting a lever of the second class for shiftingr the second clutch member to and from engagement with the first clutch member, and a lever swin able about a horizontal axis and located a ongside the above mentioned portion of the support and engaging (he yoke means between the ends thereof for swinging the clutch shifting means.

20. In combination with the frame and a driven shaft of a motor vehicle, a pump arranged substantially in the same horizontal plane as the shaft, the pump having a socket, a pump support carried by the frame,

longitudinally of its own axis at all means for driving the pump from the Shaft,`

said means including a clutch, clutch shifting member having ceived in tl1e` socket, and a lever ing the clutch shifting member.

21. In combination with the frame and a driven shaft of a motor vehicle, a pump arranged at substantially the same level as the shaft, a pump support carried by the frame and interposed betyyeen the pump and the shaft, a pump driving gear mounted on the support and encircling the shaft, and means a swingable an end refor swingfor connecting the gear to the shaft at will, said means ncluding a clutch member carried by the shaft, a shiftable clutch member supported by the gear, a yoke swingable about a vertical axis for shifting the last mentioned clutch member, and means foi" jacent the shaft, a pump support interposed between the pump and the shaft, a threaded member for securing the pump to the sup` port, clutch means for connecting the pump to the shaft at will, said clutch means including a lever swingable about the threaded member. i

23. In combination with the frame and a driven shaft of a motor'vehicle, a pump adjacent the shaft, a pump support interposed between the pump and the shaft, clutch means for connecting the pump to' the shaft at will, said clutch means including a clutch shifting yoke swingable about a vertical axis and a lever swingable about a horizontal axis, the lever being slotted and embracing the yoke.

24. In combination with the frame and a driven shaft of a motor vehicle, a pump adjacent the shaft, a pump support interposed between the pump and the shaft, clutch means for connecting the pump to the shaft at will, said clutch means including a swing able notched clutch shifting yoke and a swingable lever having a divided end ortion the divisions of which are receive(A i'n the notch.

25. In a motor vehicle, a driven shaft, a clutch member carried thereby,` a rotatable gear, a shiftable clutch member carried by the gear, n yoke for shifting `the last men- .lioned clutch member, a support for the voke including a socket in which the end of the yoke is received andin which the yoke may have limited universal swinging movement.

26. In a. motor vehicle, a driven shaft, a.` clutch member carried thereby,` a rotatable gear, clutch pins supported by sind slidable through the gear to and from engagement with the clutch member` the end's of the pins on the side of the gear most remote from the clutch member having reduced ends form ing shoulders, said ends being threaded, a spool-like member through iwhich said ends pass, and nuts for drawing the pins up against the spool-like member to cause the shoulders to bear thereon.

GARFIELU WOOD. 

